UTICA BOILERS PEG075EID - Page 27

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WIRE DIAGRAMS
(For full-sized Wire Diagrams, see Literature Envelope.)
Figure 20 - Ladder Diagram For Boilers With CG 400-2060 Probe Type Low Water Cut-Off
120V / 24V, 50VA
TRANSFORMER
L N
LOW WATER
CUT OFF
JP2-1
JP2-2
JP2-3
NOTE:
CONNECTOR POSITION 3 IS
LABELED 1 ON LWCO CIRCUIT
BOARD JP2 MOLEX CONNECTOR
PRESSURETROL
BLOCKED VENT
SWITCH
THERMOSTAT
ROLL OUT
SWITCH
1
3
VENT DAMPER
IGNITION MODULE
24V
24V
(GND)
PV
GND
(BURNER)
MV SPARK
SENSE
MV/PV
PROBE
JP1-
BURNER
JP1-P1JP1-A
JP1-1
JP1-2
2
4
MV/PV
MV
GAS VALVE
GNDPV
JP1-P2
SPARK
IGNITOR
LOW WATER
CUT OFF PROBE
RC
HIGH VOLTAGE CONNECTIONS PER NEC AND LOCAL CODES
NEC CLASS 2
LOW VOLTAGE
(R) T (W) T